JPS5912238B2 - horn speaker - Google Patents
horn speakerInfo
- Publication number
- JPS5912238B2 JPS5912238B2 JP1079378A JP1079378A JPS5912238B2 JP S5912238 B2 JPS5912238 B2 JP S5912238B2 JP 1079378 A JP1079378 A JP 1079378A JP 1079378 A JP1079378 A JP 1079378A JP S5912238 B2 JPS5912238 B2 JP S5912238B2
- Authority
- JP
- Japan
- Prior art keywords
- throat
- horn
- diaphragm
- horn speaker
- sound pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Description
【発明の詳細な説明】 本発明はホーンスピーカに関する。[Detailed description of the invention] The present invention relates to a horn speaker.
従来のホーンスピーカには音圧−周波数特性に山谷を生
ずる欠点がある。Conventional horn speakers have the drawback of producing peaks and troughs in sound pressure-frequency characteristics.
本発明は上記欠点のないホーンスピーカを得ようとする
ものである。The present invention aims to provide a horn speaker that does not have the above-mentioned drawbacks.
従来のホーンスピーカは、第１図に示すように、ホーン
１、イコライザー（位相等化器）２、振動板３、ボイス
コイル４、磁気回路５、スロート６が線分Ａ−Ａに関し
て軸対称に構成されている。As shown in Fig. 1, a conventional horn speaker has a horn 1, an equalizer (phase equalizer) 2, a diaphragm 3, a voice coil 4, a magnetic circuit 5, and a throat 6 that are axially symmetrical about a line segment A-A. It is configured.
そして、振動板３、ボイスコイル４および磁気回路５か
ら成るドライバーの発生する音波は、ホーン１、イコラ
イザー２および振動板３によってはさ捷れた狭い空室７
を経てスロート６に達し、ホーン１によって外部に放射
されるのであるが、その音圧特性には、前述のように、
特に高音域で山谷を生ずることが多い。The sound waves generated by the driver consisting of the diaphragm 3, voice coil 4, and magnetic circuit 5 are transmitted to a narrow empty space 7 separated by the horn 1, equalizer 2, and diaphragm 3.
The sound pressure reaches the throat 6 and is radiated to the outside by the horn 1, but as mentioned above, the sound pressure characteristics include:
Especially in the high range, peaks and valleys often occur.
これは、振動板３がピストン振動している場合、全体が
軸対称に構成されてドライバーの中心軸とスロートの中
心軸が一致しているため、振動板３のある半径上で発生
した音波とそれと異なる半径上で発生した音波とは、ス
ロート６に到達する行路差によって互に同位相になった
り逆位相になったりする結果、それぞれ強め合ったり打
消し合ったりして、音圧特性上に山や谷を生ずることに
なると考えられる。This is because when the diaphragm 3 is vibrating a piston, the entire structure is axially symmetrical and the center axis of the driver and the center axis of the throat coincide, so the sound waves generated on a certain radius of the diaphragm 3 and Sound waves generated on different radii may be in the same phase or out of phase depending on the path difference when reaching the throat 6, and as a result, they strengthen or cancel each other out, resulting in changes in sound pressure characteristics. It is thought that mountains and valleys will occur.
これを図で説明すると第２図のようになる。This can be explained using a diagram as shown in Fig. 2.
第２図において、振動板３の一つの円周上のＰで発生し
た音波がスロート６の円周上のＴに到達する行路長Ｐと
他の円周上のＱで発生した音波が上記円周上のＴに到達
する行路長ｑとが、例えば、ｑがある周波数の波長で２
ｐ＝ｑの関係にあれば、二つの音波は位相が互に１８０
ずれ（逆相）打消し合い音圧特性上に谷となって現われ
る。In Fig. 2, a sound wave generated at a point P on one circumference of the diaphragm 3 reaches a point T on the circumference of the throat 6, and a sound wave generated at a point Q on the other circumference reaches a point T on the circumference of the throat 6. For example, the path length q to reach T on the circumference is 2 at a wavelength of a certain frequency.
If there is a relationship p = q, the phases of the two sound waves are 180 degrees
The deviations (out-of-phase) cancel each other out and appear as valleys on the sound pressure characteristics.
これはドライバーの中心軸とスロートの中心軸とがとも
にＡ −Ａにあるために起り、ある周波数以上で、同相
になる場合、逆相になる場合が繰返し出現し、音圧特性
上に山谷を生ずる。This occurs because the center axis of the driver and the center axis of the throat are both at A-A, and above a certain frequency, cases where they are in phase and cases where they are out of phase repeatedly appear, causing peaks and troughs in the sound pressure characteristics. arise.
そこで、本発明はドライバーの中心軸とスロートの中心
軸とを一致させないようにして、ホーンスピーカの上記
欠点を解消しようとするものである。Therefore, the present invention attempts to eliminate the above-mentioned drawbacks of the horn speaker by making the center axis of the driver and the center axis of the throat not coincident with each other.
第３図は本発明の一実施例を示し ドライバーの中心軸
Ｂ−Ｂとスロートの中心軸Ｃ−Ｃとは一致していない。FIG. 3 shows an embodiment of the present invention, in which the central axis B--B of the driver and the central axis C--C of the throat do not coincide.
このだめ、振動板３の中心軸Ｂ −Ｂに関する一つの半
径の円周上から発生した音波のスロート６までの行路長
は、すべての円周上で異なる。However, the path length of the sound wave generated from the circumference of one radius about the central axis B-B of the diaphragm 3 to the throat 6 is different on all circumferences.
しだがって、従来のホーンスピーカで生じたような音圧
特性の山谷は生じ々い。Therefore, peaks and troughs in the sound pressure characteristics that occur in conventional horn speakers are unlikely to occur.
第４図のａは本発明によるホーンスピーカの軸上音圧周
波数特性を示し、同図のｂによって示す従来のホーンス
ピーカのそれに比べ平坦である。FIG. 4a shows the on-axis sound pressure frequency characteristic of the horn speaker according to the present invention, which is flat compared to that of the conventional horn speaker shown by b in the same figure.
以上のように、本発明によれば、簡単な改変により、ホ
ーンスピーカの音圧特性を改善することができる。As described above, according to the present invention, the sound pressure characteristics of a horn speaker can be improved by simple modification.
第１図は従来のホーンスピーカを示す断面図、第２図は
その振動板前面の空室部分を拡大して示す断面図、第３
図は本発明の一実施例を示す断面図、第４図はホーンス
ピーカの音圧周波数特性を示す図である。
１・・・ホーン、２・・・イコライザー、３・・・振動
板、４・・・ボイスコイル、５・・・磁気回路、６・・
・スロート、７・・・空室。Fig. 1 is a sectional view showing a conventional horn speaker, Fig. 2 is an enlarged sectional view showing the empty space in front of the diaphragm, and Fig. 3 is a sectional view showing a conventional horn speaker.
The figure is a sectional view showing one embodiment of the present invention, and FIG. 4 is a diagram showing the sound pressure frequency characteristics of a horn speaker. 1...Horn, 2...Equalizer, 3...Diaphragm, 4...Voice coil, 5...Magnetic circuit, 6...
・Throat, 7...vacant room.
Claims (1)
板前面にそれとの間の狭い空室とともにホーンとの間に
形成するスロートの中心軸とを不一致としたことを特徴
とするホーンスピーカ。1. A horn speaker characterized in that the central axis of the driver and the central axis of the throat formed between the equalizer and the horn are formed with a narrow space between the equalizer and the diaphragm in front of the driver's diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1079378A JPS5912238B2 (en) | 1978-02-02 | 1978-02-02 | horn speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1079378A JPS5912238B2 (en) | 1978-02-02 | 1978-02-02 | horn speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54104324A JPS54104324A (en) | 1979-08-16 |
| JPS5912238B2 true JPS5912238B2 (en) | 1984-03-21 |
Family
ID=11760214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1079378A Expired JPS5912238B2 (en) | 1978-02-02 | 1978-02-02 | horn speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5912238B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021032621A1 (en) | 2019-08-16 | 2021-02-25 | Philip Morris Products S.A. | Container having box and sleeve with locking mechanism |
-
1978
- 1978-02-02 JP JP1079378A patent/JPS5912238B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54104324A (en) | 1979-08-16 |
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